Step 1

Note: you can make the caramelized onions ahead of time and store it in the refrigerator, in an air-tight container. Warm it up slightly before adding to the dip mixture.

Step 2

Half the onions, cut off the tip, peel the outer skin, and slice onion thinly to the root. Discard the tip and the root.

Step 3

Heat up a cooking pan over medium heat and add butter and oil. Add sliced onions and season with a little salt. Mix onions to evenly coat them with oil and seasoning.

Step 4

Cook over medium heat, stirring from time to time, until you notice most of the liquid cook out and onions start to get browned.

Step 5

Lower the heat to medium-low and cook until onions are caramelized to nice brown color all over. Stir onions every 5-10 minutes white they're cooking. If onions seem a little dry, add about 1/2 tbsp of butter. (Don't try to rush the process or you will end up with sautéed or crispy onions and not caramelized. This process will take 20-30 minutes.)

Step 6

Preheat the oven to 350° and lightly grease a ceramic or glass baking dish.

Step 7

In a medium bowl, mix all the ingredients except for caramelized onions until smooth.

Step 8

Fold in caramelized onions and transfer the mixture into an oven-safe dish. Sprinkle with a little extra shredded cheese on top.

Step 9

Bake for 15-20 minutes, until the edges just start to bubble.